1 /*
2  * Copyright 2021 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.example.android.receivecontent;
18 
19 import android.net.Uri;
20 import android.view.LayoutInflater;
21 import android.view.ViewGroup;
22 
23 import androidx.annotation.NonNull;
24 import androidx.appcompat.widget.AppCompatImageView;
25 import androidx.recyclerview.widget.RecyclerView;
26 
27 import java.util.ArrayList;
28 import java.util.Collection;
29 import java.util.List;
30 
31 final class AttachmentsRecyclerViewAdapter extends
32         RecyclerView.Adapter<AttachmentsRecyclerViewAdapter.MyViewHolder> {
33 
34     static final class MyViewHolder extends RecyclerView.ViewHolder {
35         public AppCompatImageView mAttachmentThumbnailView;
36 
MyViewHolder(AppCompatImageView attachmentThumbnailView)37         MyViewHolder(AppCompatImageView attachmentThumbnailView) {
38             super(attachmentThumbnailView);
39             mAttachmentThumbnailView = attachmentThumbnailView;
40         }
41     }
42 
43     private final List<Uri> mAttachments;
44 
AttachmentsRecyclerViewAdapter(List<Uri> attachments)45     AttachmentsRecyclerViewAdapter(List<Uri> attachments) {
46         mAttachments = new ArrayList<>(attachments);
47     }
48 
addAttachment(Uri uri)49     public void addAttachment(Uri uri) {
50         mAttachments.add(uri);
51     }
52 
addAttachments(Collection<Uri> uris)53     public void addAttachments(Collection<Uri> uris) {
54         mAttachments.addAll(uris);
55     }
56 
clearAttachments()57     public void clearAttachments() {
58         mAttachments.clear();
59     }
60 
61     @Override
getItemCount()62     public int getItemCount() {
63         return mAttachments.size();
64     }
65 
66     @NonNull
67     @Override
onCreateViewHolder(ViewGroup parent, int viewType)68     public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
69         AppCompatImageView view = (AppCompatImageView) LayoutInflater.from(parent.getContext())
70                 .inflate(R.layout.attachment, parent, false);
71         return new MyViewHolder(view);
72     }
73 
74     @Override
onBindViewHolder(@onNull MyViewHolder holder, int position)75     public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
76         Uri uri = mAttachments.get(position);
77         holder.mAttachmentThumbnailView.setImageURI(uri);
78         holder.mAttachmentThumbnailView.setClipToOutline(true);
79     }
80 }
81